Multi Car AC Kit 3 Cans Chemours DuPont Refrigerant R-134a Can Tap with Gauge This kit is designed to Boost your A/C system to Full Capacity. The refrigerant is pure R134 from DuPont/Chemours. The can tap with gauge is reusable and fits onto all R-134a Refrigerant, Oil Charge, and Stop Leak Cans. The connecting end will fit on all standard R-134a Low Side Ports.